Thursday, September 08, 2022

Chasing Wild Geese

 It was a little late in the season to catch Llyn y Fan Fawr with a low water level but, spurred on by the news that its Carmarthenshire counterpart (Llyn y Fan Fach) had revealed some exciting finds when its level dropped dramatically this year, we decided to try.

At least the weather was reasonably kind to us and we found Quillwort or Isoetes lacustris which hasn't been recorded there since 1972. 

Luck played a part but also having shore bound colleagues pointing out where to go helped a lot (they could see better than I could from above). I didn't even need to get my feet wet (just) as I waded in my Wellingtons beyond where the common Shoreweed grew.

The only picture I have is from my microscope showing the characteristic division of the leaf cross section into four compartments so here is a drawing from an old book:

And my cross-sections:

I didn't photograph the lake but the upper reaches of the Tawe, which we followed from it's source on the way back made for some nice snaps.

Saturday, June 25, 2022

Half a year gone

 And we have been active.

Members of the botany group were invited to update our records for Townhall Clock - Adoxa moschatellina from early March.

Adoxa moschatellina at Pwll y Wrach Nature Reserve, Talgarth

Results are pretty much now in (it is hard to spot and record from now on and often completely died back).

It was refound in 21 of the target monads (1km squares) with Gaye and Lynne finding the longest "lost" population near Crickhowell (last seen 1957). (All the updates were for squares where it had not been seen since 1999.)

There were records from 34 squares where the species had never before been recorded. Other records stretched from near Craig y nos (the species peters out to the south west there) to Cilmery near Builth Wells.

Click here for the full results.